全天候呼吸閥
All-weather breathing valve-
防爆阻火呼吸閥
Explosion-proof fire retardant valve -
管道阻火器
Flame arresters -
波紋管儲罐阻火器
Flame arrester for bellows storage tank -
第一代復合式排氣閥
First generation compound exhaust valve -
第二代復合式排氣閥
Second generation compound exhaust valve -
單口、雙口排進氣閥
Single port and double port exhaust air valve -
法蘭單口排氣閥
Flange single port exhaust valve